A novel UWB filter using a new type of microstrip double-ring resonators

Author

Liu, Wei ; Ma, Zhewang ; Chen, Chun-Ping ; Zheng, Guoxin ; Anada, Tetsuo

Author_Institution

Shanghai Univ., Shanghai

fYear

2006

fDate

12-15 Dec. 2006

Firstpage

33

Lastpage

36

Abstract

An ultra wideband bandpass filter (BPF) with sharp-rejection is proposed by using a new structure of double ring resonators. The double ring resonator generates a couple of attenuation poles, and its operation mechanism is made clear through the even- and odd-mode analysis of the circuit. The stopband of the filter can be significantly widened by cascading the double ring resonators. A two-stage microstrip BPF with a 3-dB fractional bandwidth of 80% is designed, fabricated and tested. The measured frequency response of the filter validates well the theoretical analysis and electromagnetic simulation.

Keywords

band-pass filters; frequency response; microstrip filters; microstrip resonators; resonator filters; UWB filter; attenuation poles; electromagnetic simulation; even-mode analysis; frequency response; microstrip double-ring resonators; odd-mode analysis; sharp-rejection; ultra wideband bandpass filter; Attenuation; Band pass filters; Bandwidth; Circuit analysis; Coupling circuits; Microstrip filters; Microstrip resonators; Optical ring resonators; Resonator filters; Ultra wideband technology; Ultra wide-band; double ring resonator; microstrip bandpass filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. APMC 2006. Asia-Pacific

Conference_Location

Yokohama

Print_ISBN

978-4-902339-08-6

Electronic_ISBN

978-4-902339-11-6

Type

conf

DOI

10.1109/APMC.2006.4429373

Filename

4429373